CN103562029B - For method and the secure network of the fault in the drive system of cognitron motor-car - Google Patents

For method and the secure network of the fault in the drive system of cognitron motor-car Download PDF

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Publication number
CN103562029B
CN103562029B CN201280026627.3A CN201280026627A CN103562029B CN 103562029 B CN103562029 B CN 103562029B CN 201280026627 A CN201280026627 A CN 201280026627A CN 103562029 B CN103562029 B CN 103562029B
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China
Prior art keywords
fault
drive system
monitoring module
identify
electronic controlled
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Active
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CN201280026627.3A
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Chinese (zh)
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CN103562029A (en
Inventor
J·默尔曼
R·科斯费尔德
H·施托尔茨
F·奥斯特雷彻尔
C·约翰
K-J·胡贝尔
H·斯马克曼
M·施耐德
H·雅各布
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0808—Diagnosing performance data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/09—Engine drag compensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/406—Test-mode; Self-diagnosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/413—Plausibility monitoring, cross check, redundancy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B60W2520/105—Longitudinal acceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/26—Wheel slip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/28—Wheel speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

Fault in the drive system for cognitron motor-car according to method of the present invention with according in secure network of the present invention, this drive system has electronic controlled brake control system and at least one electronic controlled driving driving engine and/or electronic controlled power-transfer clutch and/or electronic controlled driving device, brake control system is equipped with deceleration of electrons control convenience, described deceleration of electrons control convenience is connected with independently monitoring module, wherein, described independently monitoring module checks the appearance of incredible lock torque to identify the fault in drive system.

Description

For method and the secure network of the fault in the drive system of cognitron motor-car
Technical field
The present invention relates to the method for the fault in the drive system of cognitron motor-car and secure network.
Background technology
Due to the standard (such as ISO or CARB standard specifications) of legal provisions, claim to vehicle manufacturers over several years, in self-propelled vehicle, control electronics or electronic control system such as Digital Engine Control or self adaptation transmission control device must have self diagnostic capability.Thus, such as so-called OBD (On-Board Diagnostics (OBD)) system is developed.The example of the structure of OBD system can be able to find in the patent documentation DE19731283A1 of the applicant.
Except the software scope that actual functional capability controls, the control electronics of interior of motor vehicles has the large software scope for selfdiagnosis in this regard.The example of the selfdiagnosis of control convenience inside is described in the patent documentation DE19612857A1 of applicant.
The focus of the selfdiagnosis of defined is the safety of each independent control convenience or each independent electron steering Vehicular system itself at present.Consequently leads to high application expense.
Referenced patent document EP0104539B1, DE1019523804B4 and DE102007001496A1 with regard to other technologies background.There is known in the prior art, especially regulate tyre skidding by the impact of drive torque or the selfdiagnosis of drive system.
Summary of the invention
Task of the present invention is a simplified the identification of the fault in the drive system of self-propelled vehicle and the safety under improve failure condition.
This task according to the present invention by being solved in method according to method of the present invention by being solved in device according to secure network of the present invention.In a kind of method for the fault in the drive system of cognitron motor-car, it has electronic controlled brake control system and at least one electronic controlled driving driving engine and/or electronic controlled power-transfer clutch and/or electronic controlled driving device, wherein, brake control system is equipped with deceleration of electrons control convenience, described deceleration of electrons control convenience is connected with independently monitoring module, wherein, described independently monitoring module checks the appearance of incredible lock torque to identify the fault in drive system.In a kind of secure network for implementing according to method of the present invention, it has electronic controlled brake control system and at least one electronic controlled driving driving engine and/or electronic controlled power-transfer clutch and/or electronic controlled driving device, wherein, brake control system is equipped with deceleration of electrons control convenience, described deceleration of electrons control convenience is connected with independently monitoring module, wherein, described independently monitoring module comprise by the identification of incredible lock torque in order to identify the program module of the fault in drive system.
According to the present invention, in order to the fault (drive system has electronic controlled brake control system, at least one electronic controlled driving driving engine and/or electronic controlled power-transfer clutch and/or electronic controlled driving device) in the drive system of cognitron motor-car, for brake control system is equipped with deceleration of electrons control convenience, it is connected with independently monitoring module.At this, independently monitoring module is in order to identify fault in drive system and check incredible lock torque.
Independently monitoring module such as can be connected with brake control apparatus in the following way: monitoring module is integrated in brake control apparatus or with brake control apparatus particularly by data bus communication as program module.
Independently monitoring module preferably corresponding identify fault time export at least one control electronics of drive system the breakdown signal limited, wherein, drive system at least one control convenience according to limit fixed signal drives interrupts driving engine and the wheel driven between force closure or stop the power transmission driving driving engine.
Additionally or alternatively, for identifying that the program module of the fault in drive system especially analyzes the vehicle wheel rotational speed of driven wheel in view of tyre skidding identification.Incredible lock torque is identified when tyre skidding exceedes predetermined threshold value.(vehicle) moderating ratio threshold value that is that derive thus with being above of exceeding that tyre skidding threshold value is equal to or that measure by longitudinal acceleration sensor or lock torque threshold value.
When exist the exclusion standard limited for example identify hand brake be activated identify sideslip situation or identify traction situation only identify incredible lock torque in short-term or just exist ABS regulate time, although identify the identification that incredible lock torque can suppress the fault in drive system.
The present invention is based on following design, knowledge and design:
Such as drive the fault determined in the parts of driving engine (combustion engine and/or electrical motor), power-transfer clutch or driving device (especially automatic driver) can cause driving the lock torque of wheel very high in drive system.On rare occasion, lock torque can exceed the limit of adhesion driving wheel.If there is attachment sharp fall (Haftungsabriss), then can cause the travel situations that safety is relevant.
Therefore, according to the safety approach that the present invention proposes networking, wherein, fault-recognition program can be performed by the independently monitoring module be connected with brake control apparatus, be not the fault identifying drive system as brake system is common by this fault-recognition program, but realize quick countermeasure to set up safe condition by this fault-recognition program.By be connected with brake control apparatus and the independent monitoring module that also can be integrated in brake control apparatus at this, motoring condition is monitored with regard to credibility.If brake control apparatus or monitoring module especially identify the motoring condition that insincere spike stop drives wheel, then brake control apparatus or monitoring module generate corresponding breakdown signal, such as, from least one control convenience of drive system (device for controlling engine and/or gearing control device), receive this breakdown signal by known CAN or by other communication paths.If the control convenience of drive system receives the corresponding breakdown signal limited from monitoring module, then the parts of drive system are placed in safe condition by control convenience, in this safe condition, reduce lock torque as far as possible rapidly.This most effectively and quickly move through drives interrupts driving engine the most and drive force closure between wheel or by eliminating any drive torque to realize.Interrupt the type of force closure or the measure needed for power the transmission type depending on drive system and the fault identified.In the case, drive system also can have multiple only driving driving engine (hybrid drive be such as made up of electrical motor and combustion engine) of.If only have an electrical motor as driving driving engine, then this electrical motor can be switched to generator operation mode to interrupt power transmission.If in a motor vehicle containing the hand-operated transmission with electronic controlled power-transfer clutch, then power-transfer clutch can be opened.If have driving device or the automatic driver of automation, then the corresponding power-transfer clutch in driving device can be opened to interrupt force closure.
Alternatively or additionally, a kind of possible improvement project of the design of independent monitoring module and interruption force closure or the transmission of interruption power can relate to the details of the program module for identifying the fault in drive system, wherein, especially prerequisite can be the fault (lasting drive failures or accidental driving device disturbed condition, only claim drive failures below) in monitoring automatic driver.
At this, especially by the vehicle wheel rotational speed to driven wheel corresponding analysis and identify when occur incredible high lock torque (disturbance torque braked) in drive-system, its (possibility) occurs due to drive failures.Remarkable slippage skidding or even motionless whether is had at the wheel that this inspection institute drives according to the present invention, wherein ensure that in the method, high lock torque is derived from drive-system as the disturbance torque carrying out braking and is such as not derived from situation about being caused by shown hand brake and/or is not derived from due to sideslip situation that is smooth or that cause due to thick accumulated snow etc. or low-friction coefficient situation.
Because lowest gear and being combined in when not having drive failures of maximum engine boost torque also can cause large braking deceleration, so such as moderating ratio threshold value must be placed in approximately-4m/s when monitoring incredible high lock torque and identifying drive failures 2neighbouring in order to reliable recognition drive failures.But function can be limited to great friction coefficient situation by this.
In order to also can drive failures be identified in low-friction coefficient situation, according to the following method of the invention process:
When drive failures is by transmission system spike stop, skid owing to causing high wheel (slippage) on driven wheel thus, brake control apparatus (DSC of such as BMW) regulates according to the skidding natively implemented intervenes (such as MSR, Motor-Schlupf-Regel-Eingriff (driving engine skids to regulate and intervenes), that is, improve just expect engine moment) require the expectation engine moment of maximum possible.Although expect that engine moment is just, not design driven driving engine, to make wheel stability when there is drive failures.So independently monitoring module is in obvious slippage according to driven wheel and skids (namely also may static) and also stop (namely when exceeding the predetermined tyre skidding threshold value for identifying drive failures) and identify drive failures, although the just expectation engine moment driving engine calls maximum.
A kind of favourable improvement project of the present invention is following steps:
Require driving engine to skid to regulate that intervening (MSR) greatly increases based on, intact brake control apparatus, namely improve and just expect engine moment.Thus, even to expecting that the inquiry of engine moment is unnecessary.Whether function is normal just enough for inspection brake control apparatus.When MSR function such as due to brake control apparatus defectiveness unavailable time, as feedback solutions, this function can be limited at-4m/s 2the monitoring (as described above) of following moderating ratio.
In order to further protection, the moderating ratio that can additionally check vehicles (measured on the longitudinal acceleration sensor irrelevant with brake system) is negative or the vehicle deceleration rate produced by brake system lower than maximum (based on can lock torque estimate).
In a word, although independently monitoring module identifies drive failures according to the wheel having MSR to require to drive stop in (namely exceeding the predetermined vehicle slip threshold value for identifying insincere lock torque) is skidded in significant slippage.So the identification of drive failures identifies when exceed the restriction threshold value characterizing insincere lock torque.This threshold value such as can be defined as tyre skidding threshold value, moderating ratio threshold value or lock torque threshold value.
A kind of favourable improvement project of the present invention is such as the following exclusion standard (namely when identifying the threshold value exceeding restriction) for identifying drive failures:
1. operate hand brake;
Because hand brake operation also can trigger drive failures identification, preferably additionally read hand brake switch by monitoring module, its intact function is also guaranteed in advance.
2. break away and identify;
Under significant tyre skidding also appears at sideslip situation.
3. only exceed lock torque threshold value in short-term;
Only insincere high lock torque also can occur when switchback or being transitioned in the inertia traveling of low-friction coefficient situation from the saltus step of great friction coefficient situation in short-term.Therefore, do not identify drive failures immediately when exceeding threshold value, but just identify drive failures after the integration of rear axle slip (Hinterachsschlupf) exceedes predetermined Second Threshold.
4. exceed threshold value especially consumingly when ABS regulates;
Preferred reduction at ABS conditioning period to the sensitivity exceeding threshold value.Such as, the model delay be made up of wheel brake pressure is asymmetricly filtered.Thus, the monitoring neutralisation that threshold value according to the present invention is exceeded is made when ABS regulates.
5. draw situation
Monitoring module is ability quilt " sharpening " when rear wheel speed exceedes minimum value, to stop fault recognition by distraction procedure.
Accompanying drawing explanation
The schematic outline of the automotive component according to a kind of embodiment of the present invention shown in the drawings.
Detailed description of the invention
In the figure, a kind of embodiment of the present invention is shown.The figure illustrate the schematic outline of automotive component, this self-propelled vehicle has the possible network of electronically controlled system, and these systems comprise with the combustion engine VM of electronic engine control equipment DMS, with the automatic driver G of electronics gearing control device EGS and the brake system with deceleration of electrons control convenience DSC.In addition, schematically generally illustrates the wheel of vehicle with a wheel R, described wheel has the sensor for inspection vehicle wheel speed n_R.For signal detected and analysis in brake control apparatus DSC of inspection vehicle wheel speed n_R.Such as calculate thus determined by vehicle wheel rotational speed, be especially negative acceleration/accel-a at this n_R.Control convenience DMS, EGS are such as connected CAN by number bus with the communication of DSC to carry out.Electronic engine control equipment DMS such as also obtains the state of the acceleration pedal FP as other incoming signals.Brake control apparatus DSC can detect the state of acceleration pedal FP equally by CAN and additionally obtain the position of brake pedal BP.
Such as by the state of vehicle wheel rotational speed n_R, acceleration pedal FP and the position of brake pedal BP and other data existed in DSC brake control apparatus and information as the incoming signal of acceleration pick-up, hand brake switch S _ H on off state, breakking away identifies that S_E, ABS regulate and identifies ABS_E, monitoring module can monitor with regard to credibility in vehicle wheel rotational speed n_R motoring condition.When such as there is follow-up insincere motoring condition: operation acceleration pedal (FP>0), brake pedal is not operated (BP=0) and is therefore occurred the deceleration rate value that calculated by vehicle wheel rotational speed n_R |-a n_R| time on the threshold value S limited, be the monitoring module of program module (being integrated in brake control apparatus DSC at this) according to form of the present invention just identify the fault in drive system, wherein, the threshold value of restriction can infer incredible high lock torque.
According to the present invention, so deceleration of electrons control convenience DSC is at this and according to monitoring module of the present invention in conjunction with envelop of function actual with it independently for the external diagnosis of drive system.When identifying fault, the breakdown signal F of restriction outputs on CAN.Device for controlling engine DMS and gearing control device EGS can receive breakdown signal F.Such as, when the actual defectiveness of combustion engine VM, gearing control device EGS can encourage driving device G to open at least one power-transfer clutch, interrupts combustion engine VM thus and drives the force closure between wheel R.When identifying drive failures, power-transfer clutch controlled if desired can be opened to interrupt force closure.The power transmission of electrical motor can be turned off in a case of a hybrid vehicle when identifying drive failures.
Independently monitoring module preferably be integrated in brake control apparatus DSC, but it also can be integrated in other control conveniences and such as to obtain necessary incoming signal BP, n_R etc. by data bus CAN from brake control apparatus DSC.
A kind of cross-system by method design according to the present invention but simple, attach troops to a unit in the monitoring scheme of engine control unit.

Claims (8)

1. for the method for the fault in the drive system of cognitron motor-car, it has electronic controlled brake control system and at least one electronic controlled driving driving engine (VM) and/or electronic controlled power-transfer clutch and/or electronic controlled driving device (G), wherein, brake control system is equipped with deceleration of electrons control convenience (DCS), described deceleration of electrons control convenience and independently monitoring module connect, wherein, described independently monitoring module check the appearance of incredible lock torque to identify the fault in drive system.
2. method according to claim 1, is characterized in that, independently monitoring module export the breakdown signal (F) limited at least one control electronics (DMS, EGS) of drive system when corresponding fault recognition, wherein, described control electronics is according to monitoring module restriction breakdown signal (F) interrupt drive driving engine (VM) and the wheel (R) driven between force closure or stop the power transmission driving driving engine (VM).
3. method according to claim 1 and 2, it is characterized in that, for identifying that the program module of the fault in drive system to analyze the vehicle wheel rotational speed (n_R) of driven wheel (R) in view of tyre skidding identification, and identify incredible lock torque when tyre skidding exceedes predetermined threshold value (S).
4. method according to claim 1 and 2, it is characterized in that, for identifying that the program module of the fault in drive system at least analyzes vehicle deceleration rate by longitudinal acceleration sensor and/or by the vehicle wheel rotational speed (n_R) of driven wheel (R), and identify incredible lock torque when vehicle deceleration rate exceedes predetermined threshold value (S).
5. method according to claim 1 and 2, is characterized in that, when there is the exclusion standard limited, even if identify incredible lock torque, for identifying that the program module of the fault in drive system also suppresses the identification of the fault in drive system.
6. method according to claim 5, it is characterized in that, the exclusion standard of restriction is: identify the ABS adjustment that hand brake is activated or identifies sideslip situation or identify traction situation or only identify incredible lock torque in short-term or just exist.
7. for implementing the secure network according to the method one of claim 1 to 6 Suo Shu, there is electronic controlled brake control system and at least one electronic controlled driving driving engine (VM) and/or electronic controlled power-transfer clutch and/or electronic controlled driving device (G), wherein, brake control system is equipped with deceleration of electrons control convenience (DCS), described deceleration of electrons control convenience and independently monitoring module connect, wherein, described independently monitoring module comprise by the identification of incredible lock torque in order to identify the program module of the fault in drive system.
8. secure network according to claim 7, is characterized in that, monitoring module be connected with at least one control convenience (DMS, EGS) of drive system, described control convenience has for according to monitoring module breakdown signal (F) drives interrupts driving engine (VM) of restriction and the wheel (R) driven between force closure or the shutoff module transmitted of power.
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